摘要
采用Ti-Zr-Be活性钎料作为连接层,在一定工艺参数下真空钎焊Cf/SiC复合材料和304不锈钢.利用SEM,EDS,XRD和俄歇谱仪分析接头微观组织结构,利用剪切试验检测接头力学性能,分析了工艺参数对接头抗剪强度的影响.结果表明,在复合材料附近形成ZrC+Ti C+Be2C/Ti-Si反应层,连接层中主要包含Fe Zr2,锆基固溶体,Be Ti,Ti-Zr固溶体等反应产物,304不锈钢附近形成Fe Ti/αFe反应层.在连接温度为950℃,连接时间为60min时,接头室温抗剪强度最高为109.3 MPa,断裂位置为Cf/SiC复合材料与中间层连接界面靠近复合材料端.
In this paper,a new brazing filler has been developed to join ceramic or ceramic matrix composite with metal.The Cf/ SiC composites and 304 stainless steel were joined using TiZ rB e filler metal at 920-1050 ℃ for 15-90 min. The effect of brazing parameters on the microstructures of the brazed joint was investigated by SEM,EDS,XRD and AES. The mechanical property of the brazed joints were measured by mechanical testing machine,the effect of brazing parameters on the mechanical property were analyzed. The results show that the brazing joint mainly consists of FeZ r2,Zr based solid solution,BeT i and Ti-Zr reaction products. There action layer consisted of ZrC,TiC,and Be2 C / Ti-Si is formed near the Cf/ SiC composite while FeT i / αFe reaction layer is formed adjacent to 304 stainless steel. The maximum shear strength of the joints brazed at 950 ℃ for 10 min is109. 3 MPa.
出处
《焊接学报》
EI
CAS
CSCD
北大核心
2014年第12期31-34,2,共5页
Transactions of The China Welding Institution
基金
国家自然科学基金项目资助(51175037)
